Planet PDF Forum Archive

Wowsers! This is page is old, head to the LIVE Planet PDF Forum. It features more than 10 conferences, covering everything from beginner to in-depth developer and pre-press discussions. If you wish to continue... one & two archive covers 1999-2011 (160,000 pages).

I've developed a digital signature plug-in using the SignDoc sample in the SDK. I sign a document using my plug-in under Acrobat writer and verify the signature successfully. When I put the plug-in in the plug_ins directory in Acrobat reader 5.1 and try to verify the signature using the reader I get the error:"No handler could be found for a signature of type "
Why can't I verify the signature using Acrobat Reader ?

OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.